The Attribute Flow Parser Library

The Attribute-Flow Parser Library provides a collection of C++11 header files that allows users to easily create general-purpose LL(K) AFParsers. The workflow to create AFParsers and to prepare and parse some input is given below. The remainder of this wiki section will discuss details about scanning and visualization options available with the AF Parser Library.

General Usage

1. Declare (non)terminals

   • Nonterminal Syntax: Parser<InType, OutType> NAME;
   • Terminal Syntax: Parser<InType, OutType> term(token_code);
   • InType and OutType specify the types of the in- and out-flow variable for the (non)terminal
   • token_code is an integer

2. Specify language to accept with an AFG

3. Prepare input in a Tokenizer derived object

   • FlexTokenizer is derived from Tokenizer and uses Flex to tokenize input

4. Invoke parse() on starting nonterminal